The linear accelerator uses high energy focused xray beams to treat many types of cancer. Cancer within the nasal passages and oral cavity, cancer involving the extremities and feline fibrosarcomas are all treated diseases. As in human medicine, multiple treatments are required to deliver the effective dose in controlling these cancers. The linear accelerator equipment is capable of delivering the prescribed dose within precise limits in a short amount of time. Patients usually have to be sedated for the treatment but because of the linear accelerator there is usually a very short period of time needed for sedation. A radiation therapy planning software using computed tomography or magnetic resonance images is utilized to provide precise radiation doses to the cancerous tissue.